Steam-generator



(No Model.)

J. FISH.v

STEAM GENERATOR.

No. 331,783. Patented Dec. 8, 1885.

MW 13mg BY w 214, ATTORNEYS.

WITNESS: W 0' UNITED STATES ATENT Urinals.

JOHN FISH, OF SUMMIT, NEW JERSEY, ASSIGNOR OF ONE-THIRD TO LORENZO BURHAUS, OF BROOKLYN, NEW YORK.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 331,783, dated December 8, 1885.

Application filed April 3, 1885. Serial "No. 161,167. (No model.)

To aZZ whom, it may concern:

Be it known that I, JOHN FIsH, of Summit, in the county of Union and State of New Jersey, have invented a certain new and useful Improvement in Steam-Generators, of which the following is a specification.

I will describe a steam-generator embodying my improvement, and then point out the various features of the improvement in the claims.

In the accompanying drawings, Figure 1 is a central vertical section of a steamgenerator embodying my improvement. Fig. 2 is a central vertical section of certain parts thereof on a larger scale.

Similar letters of reference designate corresponding parts in both figures.

The shell A of the steamgenerator, as here shown, is intended to be cylindrical. In the lower part is a fire-chamber, B, which may be of any desirable construction, provided with grate-bars of any approved type, and with a door, B. Below the fire-chamber is an ashpit, 0. Around the fire-chamber and between it and the shell of the generator is a water-space or water-leg, a. Flues consisting of tubes D extend from the fire-chamber to a smoke-chamber, E. An outlet-flue, F, extends from this smoke-chamber. Above the smokechamber is a steam and water chamber, G.

These various parts may be of any desirable material and of any approved construction. It will be understood that the tubes D are submerged in water. The main shell A of the generator, however, ends at the top of the smokechamber, and the steam chamber is made a separate structure and fitted to the upper edge of the shell A, so as to form the top of the smoke-chamber.

H designates circulating pipe bolts, of which 0 there may be any suitable number. At the lower ends they may be secured by screwthreads,or by expanding them into the bottom of the smoke chamber. E, so that they will communicate with the water space below. 5 Some distance above the lower ends of these circulatingpipe bolts they are provided with outwardly extending flanges b. Upon the top of these flanges gaskets of copper, c, are fitted, and the steam-chamber is fitted to them above these gaskets. They extend through the steam-chamber, and have copper gaskets d fitted to them above the steam-chamber. Nuts 6, shaped to form caps, are fitted to screw-threads at their upper ends. These nuts in conjunction with the circulating-pipe bolts, serve to secure the steam-chamber to the shell A and smoke-chamber E of the generator. The gaskets c d preserve tight joints where the circulating-pipe bolts pass through the steam chamber. The circulatingpipe 6o bolts, as their name implies, are hollow. They have longitudinal openings f within the steamchamber. Such openings consist of slots,and may be of any suitable number. They are shown as extending above the water-lineof the generator in the steam-chamber. The onculating-pipe bolts establish communication between the water -space of the generator, which is below the smoke-chamber and the steam-chamber.

I designates pipes, some of which extend down into the water-space a and rest upon the bottom thereof, and others of which or another of which derives support by resting upon the top of the fire-chamber. The lower ends of these pipes I are notched or chamfered off, so that water can enter them. At the upper ends these pipes are bell-mouthed and fit quite snugly within the circulatingpipe bolts H. The upper ends of the pipes I are below the water-line in the steam-chamber. X'Vater, as it becomes heated, rises in the circulating-pipe bolts II from the water-space below the smoke-chamber, and is discharged into the steam and water chamber. The be1lmonths of the pipes I deflect the water outward. Cooler water in the steam and water chamber descends from the steam and water chamber through the circulating-pipes I into the water-space,which is below the smokechamber. Thus a constant and valuable circulation is kept up.

hat I claim as my invention, and desire to secure by Letters Patent, is-

1. In a steamgenerator, thecombination of 5 a main water-space, a steam and water chamher, an intermediate smolrechamber, and pipebolts extending between the main water-space and the steam-chamber, and serving to establish communication between the same and connect the parts together, substantially as specified.

2. In a steam-generator, the combination of 4. In a steam-generator, the combination of a main water-space, asteam and water chzuna main-water-space, a. steam and water chamher, an intermediate smoke-chamber, the cirher, an intermediate smoke-chamber, the circulating-pipe bolts H,and the pipes I, substanculating-pipe bolts H, the flanges b, the gas- 5 tially as specified. kets c d, and the capnuts e, substantially as i 5 3. In a steam gcnerator, the combination of specified. a. main water-space, a steam and water chaml JOHN FISH. ber, an intermediate smoke-chamber, the cir- \Vitncsses: culating-pipe bolts H, and the pipes I, having T. J. KEANE,

1o bell-mouths, substantially as specified. WM. G. LIPSEY. 

